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/*
Copyright (C) 1996, 1997 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
Octave is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#if !defined (octave_Range_h)
#define octave_Range_h 1
#if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION)
#pragma interface
#endif
#include <iostream>
#include "dMatrix.h"
class
Range
{
public:
Range (void)
: rng_base (0), rng_limit (0), rng_inc (0), rng_nelem (0), cache (1, 0) { }
Range (const Range& r)
: rng_base (r.rng_base), rng_limit (r.rng_limit), rng_inc (r.rng_inc),
rng_nelem (r.rng_nelem), cache () { }
Range (double b, double l)
: rng_base (b), rng_limit (l), rng_inc (1),
rng_nelem (nelem_internal ()), cache () { }
Range (double b, double l, double i)
: rng_base (b), rng_limit (l), rng_inc (i),
rng_nelem (nelem_internal ()), cache () { }
double base (void) const { return rng_base; }
double limit (void) const { return rng_limit; }
double inc (void) const { return rng_inc; }
int nelem (void) const { return rng_nelem; }
bool all_elements_are_ints (void) const;
Matrix matrix_value (void) const;
double min (void) const;
double max (void) const;
void sort (void);
void set_base (double b)
{
if (rng_base != b)
{
rng_base = b;
clear_cache ();
}
}
void set_limit (double l)
{
if (rng_limit != l)
{
rng_limit = l;
clear_cache ();
}
}
void set_inc (double i)
{
if (rng_inc != i)
{
rng_inc = i;
clear_cache ();
}
}
friend std::ostream& operator << (std::ostream& os, const Range& r);
friend std::istream& operator >> (std::istream& is, Range& r);
void print_range (void);
private:
double rng_base;
double rng_limit;
double rng_inc;
int rng_nelem;
mutable Matrix cache;
int nelem_internal (void) const;
void clear_cache (void) const { cache.resize (0, 0); }
};
extern Range operator - (const Range& r);
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
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